15.64.61.5  LINES  - Sets the number of lines to reserve for a title.  For
example if you wish to have a 2 line title at the  top  of  the  plot  you
should:
     TD:SET TITLE TOP LINES=2

Negative lines puts the title inside the window.
     TD:SET TITLE BOTTOM LINES=-2
puts  the bottom title inside the window and allocates room for 2 lines of
title.
(Default:1.2 BOTTOM 2)